SMAKN&reg; 2CH Isolated Optocoupler High Low Level Trigger Relay Module 5VDC Product Name : Optocoupler Driver Relay Module;Relay Type : SRD-05VDC-SL-C Coil Voltage : DC 5V;Pole Number : 2 Channel Load : 10A, AC 250V/125V, DC 30V/28V;Overall Size : 5 x 4.1 x 1.8cm/2" x 1.6" x 0.7"(L*W*H) Materials : Metal, Plastic, Electric Parts;Main Color : Red Weight : 33g;Package Content : 1 x Optocoupler Driver Relay Module